The push-up is a great weight bearing exercise through your wrists, which is important for preventing further bone loss in that area. The push-up also strengthens the muscles of your core and upper body, including your chest, shoulders, and arms.
Begin in a plank position. Your hands should be directly beneath your shoulders with elbow straight. Your abdominal muscles should be engaged so that your shoulders, hips, and knees are in a straight line.
Keeping your lower abdominal muscles engaged, lower your chest to the ground by bending your elbows. Then push yourself back up to the starting position.